Battery-charging unit for internal-combustion engines



C. E. PEARSON.

BATTERY CHARGING uun FOR INTERNAL comsusnora ENGINES.

APPLICATION, FILED APR. 16, 19!]- Patented Oct. 28, 1919.

avwawtoz ami/ mew UNITE CARL E. PEARSON, OF IiANS-ING, MICHIGAN.

BATTERY-CHARGING UNIT FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented cease, Tate.

Application filed April 16, 1917. Serial No. 162,299.

To all whom it may concern:

Be it known that l, CARL E. PEARSON, citizen of the United States, residing at Lansing, county of Ingham, State of Michigan, have invented a certain new and useful Improvement in Battery-Charging Units for Internal-Combustion Engines, and de clare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to a battery charging unit for internal combustion engines and an object of my improvements is to provide in such an apparatus for making and breaking thecircuit at the proper time without employing complicated and delicate apparatus.

I secure this object in the device illustrated in the accompanying drawing in which:

upon the shaft a and having internal screw threads engaging the screw threads a 6 1s a circular flange coaxial with the flange and of about the same diameter and parallel thereto. 6 are pins rigidly secured to and extending at right angles from the face of the flange b and passingloosely through the peripheral aperture 0 in the flange 0 b is a flange upon the end of the sleeve 7) adjacent to the flange a.

d is the storage battery. conducting wires forming part of the circuit through the battery d and dynamo a.

f f are the binding posts on said dynamo. g is a binding post carrying one of two contact points It. .i is a flexible tongue secured at one end to the post j carrying the other of the contact points 72. and extending into the line of travel of the flange b of. the

e e e are the sleeve 6 for the purpose hereinafter described.

The operation of the above described device is as follows: When the engine is running at normal speed it rotates the armature of the dynamo a and produces a current for charging the battery d. When the engine is stopped, or

gine again increases and attains a sufiicient rate to charge the battery, the sleeve 6 iscarried back to its original position, the flange contacting the flange a and the engine again driving the dynamo. As soon as the flange b is separated from the tongue 2' the points it are brought in contact by the resiliency of said tongue and the circuit through the battery and dynamo is again complete.

The charging current is indicated by the single headed arrows E, the current driving the dynamo as a motor is indicated in direction by the triple headed arrows e What I claim is: v

The combination of an engine of variable speed, having a main shaft, a dynamo provided with a shaft axially in line with the engine shaft, a storage battery, said dynamo and battery being included in a common circuit, a make-and-break device in said circuit, one of said shafts being screwthreaded, a sleeve having internal screw threads upon said shaft, means engaging said sleeve with the other shaft so as to prevent relative angular movement but to permit a relative sliding movement in the direction longitudinal of the axis, and means whereby 'the movement of said sleeve longitudinally upon its shaft shall ac uate said make-and-break device, substantially as and for the purpose described.

' In testimony whereof I sign this specification.

CARL E. PEARSON. 

